kivyMD -从值列表动态创建小部件

Question

我对kivyMD很陌生，我尝试用图片，图标和一些文本构建简单的Carousel。

我希望动态地使用2个值列表-图片和名称。

这是手动kv的样子

Carousel:
id: train_carousel
MDFloatLayout:
MDCard:
size_hint: 0.95, 0.7
pos_hint: {"center_x": 0.5, "center_y": 0.65}
AsyncImage:
source: "https://www.smth.com/img.png"
MDIconButton:
icon: "train"
user_font_size: "40sp"
pos_hint: {"center_x": 0.2, "center_y": 0.2}
MDLabel:
text: "Thomas the Tank Engine"
pos_hint: {"center_x": 0.8, "center_y": 0.2}
MDFloatLayout:
MDCard:
size_hint: 0.95, 0.7
pos_hint: {"center_x": 0.5, "center_y": 0.65}
AsyncImage:
source: "https://www.smth.com/img.png"
MDIconButton:
icon: "train"
user_font_size: "40sp"
pos_hint: {"center_x": 0.2, "center_y": 0.2}
MDLabel:
text: "Thomas the Tank Engine"
pos_hint: {"center_x": 0.8, "center_y": 0.2}
MDFloatLayout:
MDCard:

这是我的python文件

from kivy.lang import Builder
from kivymd.app import MDApp
from kivy.core.window import Window
from kivymd.uix.button import MDIconButton
from kivymd.uix.card import MDCard
from kivymd.uix.floatlayout import MDFloatLayout
from kivymd.uix.label import MDIcon, MDLabel
Window.size = (400, 500)

class MainApp(MDApp):
def __init__(self, **kwargs):
super().__init__(**kwargs)
def on_start(self, *args):
list_of_names = ["Thomas", "Percy", "James", "Rebecca"]
list_of_pics = ["https://www.smth.com/img1.png", "https://www.smth.com/img2.png", "https://www.smth.com/img3.png", "https://www.smth.com/img4.png"]
counter = 0
while counter < len(list_of_names):
tmp_name = list_of_names[counter]
tmp_pic = list_of_pics[counter]
counter += 1
print(counter)
self.train_builder(tmp_pic, tmp_name)
def train_builder(self, name, pic):
card = MDFloatLayout()
card.add_widget(MDCard(icon="train"))
card.add_widget(MDIconButton(icon="train"))
# card.add_widget(AsyncImage(source=pic))
card.add_widget(MDLabel(text=name))
self.root.ids.train_carousel.add_widget(card)
def build(self):
return Builder.load_file("main.kv")

MainApp().run()

我注释了AsyncImage，因为我知道这不是正确的方式来做到这一点，但我仍然不能使这个工作。

列表中的图片链接仅供示例，不是真正的图像。

同样，列表比这个示例长得多。它们各有大约100个条目。

有人能帮我一下吗:)

提前谢谢你。

Answer 1

我设法找到了我的问题的答案，所以这里是如果有人遇到类似的问题。

class MainApp(MDApp):
def build(self):
carousel = Carousel()
df = pd.read_excel("trains.xlsx")
list_of_names = df['Name']
list_of_pics = df['Pic']
list_of_links = df['Link']
tmp_counter = 0
# while tmp_counter < len(list_of_names):
while tmp_counter < 10:
train_name = list_of_names[tmp_counter]
train_pic = list_of_pics[tmp_counter]
train_link = list_of_links[tmp_counter]
md_float_layout = MDFloatLayout()
md_card = MDCard(size_hint=(0.95, 0.8), pos_hint={"center_x": 0.5, "center_y": 0.60})
md_card.add_widget(AsyncImage(source=train_pic, allow_stretch=True, keep_ratio=True))
md_float_layout.add_widget(md_card)
md_float_layout.add_widget(MDIconButton(icon="train", pos_hint={"center_x": 0.5, "center_y": 0.08}))
md_float_layout.add_widget(MDLabel(text=train_name, halign="center", pos_hint={"center_x": 0.5, "center_y": 0.9}, theme_text_color="Primary", font_style="H5"))
md_float_layout.add_widget(MDLabel(text=train_link, halign="center", pos_hint={"center_x": 0.5, "center_y": 0.15}, theme_text_color="Primary", font_style="Body1"))
# md_float_layout.add_widget(MDRaisedButton(text="Click to hear my name", pos_hint={"center_x": 0.5, "center_y": 0.15}, theme_text_color="Primary"))
carousel.add_widget(md_float_layout)
tmp_counter += 1
return carousel

MainApp().run()

享受:)